| HISTORY of the 7-Zip source code |
| -------------------------------- |
| |
| 26.02 2026-06-25 |
| ------------------------- |
| - Some bugs and vulnerabilities were fixed. |
| |
| |
| 26.01 2026-04-27 |
| ------------------------- |
| - linux version of 7-Zip can use huge pages (2 MB pages). It can increase compression |
| speed for 10% for 7z/xz/LZMA/LZMA2 compression. |
| - new -spo[d|c|r] switch specifies the path generation mode for the output directory |
| for archive extraction. The output directory path is generated from the path specified |
| in the -o{dir_path} switch and the name of the archive being unpacked. |
| -spod : for Linux/Posix/macOS: -o{dir_path} specifies the direct path to the output directory. |
| The asterisk (*) character in {dir_path} will not be replaced by the archive name. |
| -spoc : 7-Zip will concatenate the path specified in -o{dir_path} with the archive name |
| to form the final path to the output directory. |
| -spor : 7-Zip will replace asterisk (*) character in the path specified in the -o{dir_path} |
| with the archive name. This is the default option. |
| - some bugs were fixed. |
| |
| |
| 26.00 2026-02-12 |
| ------------------------- |
| - improved code for ZIP, CPIO, RAR, UFD, QCOW, Compound. |
| - 7-Zip File Manager: improved sorting order of the file list. It uses file name as secondary sorting key. |
| - 7-Zip File Manager: improved Benchmark to support systems with more than 64 CPU threads. |
| - the bug was fixed: 7-Zip could not correctly extract TAR archives containing sparse files. |
| - some bugs were fixed. |
| |
| |
| 25.01 2025-08-03 |
| ------------------------- |
| - CVE-2025-55188 : The code for handling symbolic links has been changed |
| to provide greater security when extracting files from archives. |
| Command line switch -snld20 can be used to bypass default security |
| checks when creating symbolic links. |
| |
| |
| 25.00 2025-07-05 |
| ------------------------- |
| - 7-Zip for Windows can now use more than 64 CPU threads for compression |
| to zip/7z/xz archives and for the 7-Zip benchmark. |
| If there are more than one processor group in Windows (on systems with more than |
| 64 cpu threads), 7-Zip distributes running CPU threads across different processor groups. |
| - bzip2 compression speed was increased by 15-40%. |
| - deflate (zip/gz) compression speed was increased by 1-3%. |
| - improved support for zip, cpio and fat archives. |
| - fixed some bugs. |
| - CVE-2025-11001 and CVE-2025-11002 : A vulnerability was fixed for symbolic links processing, |
| when extracting files from archives. |
| - the bug was fixed : CVE-2025-53816 : 7-Zip could work incorrectly for some incorrect RAR archives. |
| - the bug was fixed : CVE-2025-53817 : 7-Zip could crash for some incorrect COM (Compound File) archives. |
| |
| |
| 24.09 2024-11-29 |
| ------------------------- |
| - The default dictionary size values for LZMA/LZMA2 compression methods were increased: |
| dictionary size compression level |
| v24.08 v24.09 v24.09 |
| 32-bit 64-bit |
| 8 MB 16 MB 16 MB -mx4 |
| 16 MB 32 MB 32 MB -mx5 : Normal |
| 32 MB 64 MB 64 MB -mx6 |
| 32 MB 64 MB 128 MB -mx7 : Maximum |
| 64 MB 64 MB 256 MB -mx8 |
| 64 MB 64 MB 256 MB -mx9 : Ultra |
| The default dictionary size values for 32-bit versions of LZMA/LZMA2 don't exceed 64 MB. |
| - 7-Zip now can calculate the following hash checksums: SHA-512, SHA-384, SHA3-256 and MD5. |
| - APM and HFS support was improved. |
| - If an archive update operation uses a temporary archive folder and |
| the archive is moved to the destination folder, 7-Zip shows the progress of moving |
| the archive file, as this operation can take a long time if the archive is large. |
| - The bug was fixed: 7-Zip File Manager didn't propagate Zone.Identifier stream |
| for extracted files from nested archives (if there is open archive inside another open archive). |
| - Some bugs were fixed. |
| |
| |
| 24.08 2024-08-11 |
| ------------------------- |
| - The bug in 7-Zip 24.00-24.07 was fixed: |
| For creating a zip archive: 7-Zip could write extra zero bytes after the end of the archive, |
| if a file included to archive cannot be compressed to a size smaller than original. |
| The created zip archive is correct except for the useless zero bytes after the end of the archive. |
| When unpacking such a zip archive, 7-Zip displays a warning: |
| "WARNING: There are data after the end of archive". |
| - Some bugs were fixed. |
| |
| |
| 24.07 2024-06-19 |
| ------------------------- |
| - Changes in files: |
| Asm/x86/Sha256Opt.asm |
| Asm/x86/Sha1Opt.asm |
| Now it uses "READONLY" flag for constant array segment. |
| It fixes an issue where ".rodata" section in 7-Zip for x86/x64 Linux had a "WRITE" attribute. |
| - The bug was fixed: 7-Zip could crash for some incorrect ZSTD archives. |
| |
| |
| 24.06 2024-05-26 |
| ------------------------- |
| - The bug was fixed: 7-Zip could not unpack some ZSTD archives. |
| |
| |
| 24.05 2024-05-14 |
| ------------------------- |
| - New switch -myv={MMNN} to set decoder compatibility version for 7z archive creating. |
| {MMNN} is 4-digit number that represents the version of 7-Zip without a dot. |
| If -myv={MMNN} switch is specified, 7-Zip will only use compression methods that can |
| be decoded by the specified version {MMNN} of 7-Zip and newer versions. |
| If -myv={MMNN} switch is not specified, -myv=2300 is used, and 7-Zip will only |
| use compression methods that can be decoded by 7-Zip 23.00 and newer versions. |
| - New switch -myfa={FilterID} to allow 7-Zip to use the specified filter method for 7z archive creating. |
| - New switch -myfd={FilterID} to disallow 7-Zip to use the specified filter method for 7z archive creating. |
| |
| |
| 24.03 2024-03-23 |
| ------------------------- |
| - 7-Zip now can use new RISCV filter for compression to 7z and xz archives. |
| RISCV filter can increase compression ratio for data containing executable |
| files compiled for RISC-V architecture. |
| - The speed for LZMA and LZMA2 decompression in ARM64 version for Windows |
| was increased by 20%-60%. |
| It uses arm64 assembler code, and clang-cl is required for arm64 assembler code compiling. |
| - Some bugs were fixed. |
| |
| |
| 24.01 2024-01-31 |
| ------------------------- |
| - 7-Zip uses file C/Precomp.h that is included to all c and c++ files. |
| CPP/Common/Common.h also includes C/Precomp.h. |
| C/Precomp.h defines the following macros (if _WIN32 is defined): |
| Z7_LARGE_PAGES 1 |
| Z7_LONG_PATH 1 |
| Z7_WIN32_WINNT_MIN 0x0500 (or higher) |
| _WIN32_WINNT 0x0500 (or higher) |
| WINVER _WIN32_WINNT |
| UNICODE 1 |
| _UNICODE 1 |
| if _WIN32_WINNT is defined already, C/Precomp.h doesn't redefine it. |
| |
| - 7-Zip now can unpack ZSTD archives (.zst extension). |
| - 7-Zip now can unpack ZIP and SquashFS archives that use ZSTD compression method. |
| - 7-Zip now supports fast hash algorithm XXH64 that is used in ZSTD. |
| - Speed optimizations for archive unpacking: rar, zip, gz, wim, cab. |
| - Speed optimizations for hash caclulation: CRC-32, CRC-64, Blake2sp. |
| - The bug was fixed: 7-Zip for Linux could fail for multivolume creation in some cases. |
| - Some bugs were fixed. |
| |
| |
| 23.01 2023-06-20 |
| ------------------------- |
| - All external macros for compiling C/C++ code of 7-Zip now have Z7_ prefix. |
| - 7-Zip COM interfaces now use new macros that allow to declare and implement COM interface. |
| - The code has been modified to compile with the maximum diagnostic warning level: |
| -Wall in MSVC and -Weverything in CLANG. |
| And some warning types are disabled in 2 files: |
| - C/Compiler.h for C/C++ code warnings. |
| - CPP/Common/Common.h for C++ code warnings. |
| - Linux/macOS versions of 7-Zip: IUnknown interface in new code doesn't use |
| virtual destructor that was used in previous 7-Zip and p7zip: |
| // virtual ~IUnknown() {} |
| So 7-Zip's dynamically linked shared libraries (codecs) are not compatible |
| between new 7-Zip for Linux/macOS and old 7-Zip (and p7zip). |
| - Some optimizations in filters code: BCJ, BCJ2, Swap* and opthers. |
| - If 7-Zip uses BCJ2 filter for big datasets compressing, it can use additional temp |
| files in system's TEMP folder. 7-Zip uses temp file for additional compressed |
| data stream, if size of such compressed stream is larger than predefined limit: |
| 16 MiB in 32-bit version, 4 GiB in 64-bit version. |
| - Some bugs were fixed. |
| |
| |
| 22.00 2022-06-16 |
| ------------------------- |
| - 7-Zip interfaces now support high precision (1 ns) timestamps with reserved |
| fields of tagPROPVARIANT (VT_FILETIME). |
| |
| |
| 21.07 2021-12-26 |
| ------------------------- |
| - The sorting order of files in archives was slightly changed to be more consistent |
| for cases where the name of some directory is the same as the prefix part of the name |
| of another directory or file. |
| - TAR archives created by 7-Zip now are more consistent with archives created by GNU TAR program. |
| |
| |
| 21.06 2021-11-24 |
| ------------------------- |
| - Bug in LZMA encoder in file LzmaEnc.c was fixed: |
| LzmaEnc_MemEncode(), LzmaEncode() and LzmaCompress() could work incorrectly, |
| if size value for output buffer is smaller than size required for all compressed data. |
| LzmaEnc_Encode() could work incorrectly, |
| if callback ISeqOutStream::Write() doesn't write all compressed data. |
| NCompress::NLzma::CEncoder::Code() could work incorrectly, |
| if callback ISequentialOutStream::Write() returns error code. |
| - Bug in versions 21.00-21.05 was fixed: |
| 7-Zip didn't set attributes of directories during archive extracting. |
| |
| |
| 21.04 beta 2021-11-02 |
| ------------------------- |
| - 7-Zip now reduces the number of working CPU threads for compression, |
| if RAM size is not enough for compression with big LZMA2 dictionary. |
| - 7-Zip now can create and check "file.sha256" and "file.sha1" text files |
| that contain the list of file names and SHA-1 / SHA-256 checksums in format |
| compatible with sha1sum/sha256sum programs. |
| |
| |
| 21.03 beta 2021-07-20 |
| ------------------------- |
| - The maximum dictionary size for LZMA/LZMA2 compressing was increased to 4 GB (3840 MiB). |
| - Minor speed optimizations in LZMA/LZMA2 compressing. |
| |
| |
| 21.02 alpha 2021-05-06 |
| ------------------------- |
| - 7-Zip now writes additional field for filename in UTF-8 encoding to zip archives. |
| It allows to extract correct file name from zip archives on different systems. |
| - The command line version of 7-Zip for macOS was released. |
| - The speed for LZMA and LZMA2 decompression in arm64 versions for macOS and Linux |
| was increased by 20%-60%. |
| - Some changes and improvements in ZIP, TAR and NSIS code. |
| |
| |
| 21.01 alpha 2021-03-09 |
| ------------------------- |
| - The command line version of 7-Zip for Linux was released. |
| - The improvements for speed of ARM64 version using hardware CPU instructions |
| for AES, CRC-32, SHA-1 and SHA-256. |
| - The bug in versions 18.02 - 21.00 was fixed: |
| 7-Zip could not correctly extract some ZIP archives created with xz compression method. |
| - Some bugs were fixed. |
| |
| |
| 20.02 alpha 2020-08-08 |
| ------------------------- |
| - The default number of LZMA2 chunks per solid block in 7z archive was increased to 64. |
| It allows to increase the compression speed for big 7z archives, if there is a big number |
| of CPU cores and threads. |
| - The speed of PPMd compressing/decompressing was increased for 7z/ZIP/RAR archives. |
| - The new -ssp switch. If the switch -ssp is specified, 7-Zip doesn't allow the system |
| to modify "Last Access Time" property of source files for archiving and hashing operations. |
| - Some bugs were fixed. |
| |
| |
| 20.00 alpha 2020-02-06 |
| ------------------------- |
| - 7-Zip now supports new optional match finders for LZMA/LZMA2 compression: bt5 and hc5, |
| that can work faster than bt4 and hc4 match finders for the data with big redundancy. |
| - The compression ratio was improved for Fast and Fastest compression levels with the |
| following default settings: |
| - Fastest level (-mx1) : hc5 match finder with 256 KB dictionary. |
| - Fast level (-mx3) : hc5 match finder with 4 MB dictionary. |
| - Minor speed optimizations in multithreaded LZMA/LZMA2 compression for Normal/Maximum/Ultra |
| compression levels. |
| - bzip2 decoding code was updated to support bzip2 archives, created by lbzip2 program. |
| |
| |
| 19.02 2019-09-05 |
| ------------------------- |
| - Support for SHA-1/SHA-256 optimized code in |
| Sha1Opt.c, Sha256Opt.c, Sha256Opt.asm, Sha1Opt.asm. |
| |
| |
| 19.00 2019-02-21 |
| ------------------------- |
| - Encryption strength for 7z archives was increased: |
| the size of random initialization vector was increased from 64-bit to 128-bit, |
| and the pseudo-random number generator was improved. |
| - Some bugs were fixed. |
| |
| |
| 18.06 2018-12-30 |
| ------------------------- |
| - The speed for LZMA/LZMA2 compressing was increased by 3-10%, |
| and there are minor changes in compression ratio. |
| - Some bugs were fixed. |
| - The bug in 7-Zip 18.02-18.05 was fixed: |
| There was memory leak in multithreading xz decoder - XzDecMt_Decode(), |
| if xz stream contains only one block. |
| - 7-Zip 18.02-18.05 used only one CPU thread for bz2 archive creation. |
| - The changes for MSVS compiler makefiles: |
| - the makefiles now use "PLATFORM" macroname with values (x64, x86, arm64) |
| instead of "CPU" macroname with values (AMD64, ARM64). |
| - the makefiles by default now use static version of the run-time library. |
| |
| |
| 18.05 2018-04-30 |
| ------------------------- |
| - The speed for LZMA/LZMA2 compressing was increased |
| by 8% for fastest/fast compression levels and |
| by 3% for normal/maximum compression levels. |
| - Previous versions of 7-Zip could work incorrectly in "Large memory pages" mode in |
| Windows 10 because of some BUG with "Large Pages" in Windows 10. |
| Now 7-Zip doesn't use "Large Pages" on Windows 10 up to revision 1709 (16299). |
| |
| |
| 18.03 beta 2018-03-04 |
| ------------------------- |
| - Asm\x86\LzmaDecOpt.asm: new optimized LZMA decoder written in asm |
| for x64 with about 30% higher speed than main version of LZMA decoder written in C. |
| - The speed for single-thread LZMA/LZMA2 decoder written in C was increased by 3%. |
| - 7-Zip now can use multi-threading for 7z/LZMA2 decoding, |
| if there are multiple independent data chunks in LZMA2 stream. |
| - 7-Zip now can use multi-threading for xz decoding, |
| if there are multiple blocks in xz stream. |
| |
| |
| 17.00 beta 2017-04-29 |
| ------------------------- |
| - NewHandler.h / NewHandler.cpp: |
| now it redefines operator new() only for old MSVC compilers (_MSC_VER < 1900). |
| - C/7zTypes.h : the names of variables in interface structures were changed (vt). |
| - Some bugs were fixed. 7-Zip could crash in some cases. |
| - Some internal changes in code. |
| |
| |
| 16.02 2016-05-21 |
| ------------------------- |
| - The BUG in 16.00 - 16.01 was fixed: |
| Split Handler (SplitHandler.cpp) returned incorrect |
| total size value (kpidSize) for split archives. |
| |
| |
| 16.01 2016-05-19 |
| ------------------------- |
| - Some bugs were fixed, |
| - Some internal changes to reduce the number of compiler warnings. |
| |
| |
| 16.00 2016-05-10 |
| ------------------------- |
| - 7-Zip now can extract multivolume ZIP archives (z01, z02, ... , zip). |
| - Some bugs were fixed, |
| |
| |
| 15.12 2015-11-19 |
| ------------------------- |
| - The BUG in C version of 7z decoder was fixed: |
| 7zDec.c : SzDecodeLzma2() |
| 7z decoder could mistakenly report about decoding error for some 7z archives |
| that use LZMA2 compression method. |
| The probability to get that mistaken decoding error report was about |
| one error per 16384 solid blocks for solid blocks larger than 16 KB (compressed size). |
| - The BUG (in 9.26-15.11) in C version of 7z decoder was fixed: |
| 7zArcIn.c : SzReadHeader2() |
| 7z decoder worked incorrectly for 7z archives that contain |
| empty solid blocks, that can be placed to 7z archive, if some file is |
| unavailable for reading during archive creation. |
| |
| |
| 15.09 beta 2015-10-16 |
| ------------------------- |
| - The BUG in LZMA / LZMA2 encoding code was fixed. |
| The BUG in LzFind.c::MatchFinder_ReadBlock() function. |
| If input data size is larger than (4 GiB - dictionary_size), |
| the following code worked incorrectly: |
| - LZMA : LzmaEnc_MemEncode(), LzmaEncode() : LZMA encoding functions |
| for compressing from memory to memory. |
| That BUG is not related to LZMA encoder version that works via streams. |
| - LZMA2 : multi-threaded version of LZMA2 encoder worked incorrectly, if |
| default value of chunk size (CLzma2EncProps::blockSize) is changed |
| to value larger than (4 GiB - dictionary_size). |
| |
| |
| 9.38 beta 2015-01-03 |
| ------------------------- |
| - The BUG in 9.31-9.37 was fixed: |
| IArchiveGetRawProps interface was disabled for 7z archives. |
| - The BUG in 9.26-9.36 was fixed: |
| Some code in CPP\7zip\Archive\7z\ worked correctly only under Windows. |
| |
| |
| 9.36 beta 2014-12-26 |
| ------------------------- |
| - The BUG in command line version was fixed: |
| 7-Zip created temporary archive in current folder during update archive |
| operation, if -w{Path} switch was not specified. |
| The fixed 7-Zip creates temporary archive in folder that contains updated archive. |
| - The BUG in 9.33-9.35 was fixed: |
| 7-Zip silently ignored file reading errors during 7z or gz archive creation, |
| and the created archive contained only part of file that was read before error. |
| The fixed 7-Zip stops archive creation and it reports about error. |
| |
| |
| 9.31 2012-10-31 |
| ------------------------- |
| - InBuffer.h : CInBuffer uses ISequentialInStream *_stream; instead of CMyComPtr<ISequentialInStream> |
| OutBuffer.h: COutBuffer uses ISequentialOutStream *_stream; instead of CMyComPtr<ISequentialOutStream> |
| |
| |
| 9.26 2011-04-11 |
| ------------------------- |
| - The BUG was fixed: multi-threaded ZIP stored file size that was at scan stage, |
| So if the file was changed after scan, the Unpack Size field was incorrect |
| |
| |
| 9.21 2011-04-11 |
| ------------------------- |
| - New class FString for file names at file systems. |
| - Speed optimization in CRC code for big-endian CPUs. |
| |
| |
| 9.18 2010-11-02 |
| ------------------------- |
| - New small SFX module for installers (C/Util/SfxSetup). |
| |
| |
| 9.17 2010-10-04 |
| ------------------------- |
| - IStream.h::IOutStream:: |
| STDMETHOD(SetSize)(Int64 newSize) PURE; |
| was changed to |
| STDMETHOD(SetSize)(UInt64 newSize) PURE; |
| |
| |
| 9.09 2009-12-12 |
| ------------------------- |
| - The bug was fixed: |
| Utf16_To_Utf8 funstions in UTFConvert.cpp and 7zMain.c |
| incorrectly converted surrogate characters (the code >= 0x10000) to UTF-8. |
| |
| |
| 9.05 2009-07-05 |
| ------------------------- |
| - FileMapping.h::CFileMapping now returns WRes |
| |
| |
| 9.04 2009-05-30 |
| ------------------------- |
| - ICoder.h: NCoderPropID::EEnum values were changed |
| |
| |
| 9.02 2009-04-23 |
| ------------------------- |
| - Bug was fixed: if swap2 filter was requests at compression, |
| 7-zip used swap4 filter instead (but id was swap2), so archives were incorrect. |
| |
| 4.61 2008-11-23 |
| ------------------------- |
| - Bug in ver. 4.58+ was fixed: |
| 7-Zip didn't use any -m* switch after -mtc, -mcl or -mcu for .zip archives. |
| - Bug in .CAB code was fixed. 7-Zip didn't show some empty files, |
| if .CAB archive contains more than one empty file. |
| |
| |
| 4.59 2008-07-27 |
| ------------------------- |
| - Bug was fixed: |
| LZMA Encoder in fast compression mode could access memory outside of |
| allocated range in some rare cases. |
| |
| |
| 4.59 alpha 2008-05-30 |
| ------------------------- |
| - BUGS was fixed: |
| 7zOut.cpp: 7-Zip incorrectly wrote size of property records in some cases. |
| 7zIn.cpp: 7-Zip incorrectly work with archive, containg archive properties. |
| |
| 4.58 alpha 9 2008-04-29 |
| ------------------------- |
| - BUG was fixed: 7-Zip showed incorrect timestamps in ISO files. |
| |
| |
| 4.58 alpha 8 2008-04-15 |
| ------------------------- |
| - BUG in 4.58 alpha 5/6/7 was fixed: |
| LZMA encoder worked incorrectly, if lp != 0. |
| - Unicode (UTF-8) support for filenames in .ZIP archives. Now there are 3 modes: |
| 1) Default mode: 7-Zip uses UTF-8, if the local code page doesn't contain required symbols. |
| 2) -mcu switch: 7-Zip uses UTF-8, if there are non-ASCII symbols. |
| 3) -mcl switch: 7-Zip uses local code page. |
| - Now it's possible to use -mSW- and -mSW+ switches instead of -mSW=off and -mSW=on |
| |
| |
| 4.58 alpha 7 2008-04-08 |
| ------------------------- |
| - BUG was fixed: BZip2Encoder and BZip2Decoder used CEvent objects without |
| creating, when BZip2 code was called with one thread (with -mmt1 switch or with |
| default switches on single thread CPU). |
| - .lzma support. |
| - RPM and NSIS support was improved. |
| - LZMA now stores only (2 << n) or (3 << n) dictionary size value to LZMA properties. |
| |
| |
| 4.58 alpha 6 2008-03-27 |
| ------------------------- |
| - NTFS time extra in ZIP. |
| - New item property - kpidTimeType - VT_UI4 (0 - NTFS, 1 - Unix, 2 - DOS). |
| - Static CRC table is not required now for Lzma Encoder (in Lz MatchFinder). |
| |
| |
| 4.58 alpha 5 2008-03-19 |
| ------------------------- |
| - Creation time (-mtc switch) for .7z archives |
| - LZMA encoder was converted to ANSI-C |
| |
| |
| 4.58 alpha 3 2008-02-25 |
| ------------------------- |
| - Speed optimizations for LZMA decoding. Now it uses C code instead of C++. |
| - 7-Zip now has 128 MB dictionary limit for 32-bit version: |
| It's for speed optimization: kNumLogBits = 9 + sizeof(size_t) / 2; |
| - TAR: 'D' link flag support. |
| - 7-Zip now can unpack multivolume RAR archives created with |
| "old style volume names" scheme (-vn switch) and names *.001, *.002, ... |
| - Fixed bugs: |
| - 7-Zip FM could not copy / move files to root network folders like \\COMPNAME\FOLDERNAME\ |
| In case of move it removed original files. |
| - SFX-WIN: if there are errors, it still could return 0. |
| - ZIP (.XPS file) isZip64 && thisDiskNumber16 == 0xFFFF. |
| - ZIP name updating: |
| If zip file contains extra field and you try to change properties of files, |
| 7-zip tries to delete all extra fileds (except for WzAES). |
| And that code could hang. |
| - 7-Zip GUI didn't suggest BZip2 dictionary size used in previous run. |
| - If creation time stamp was included in .RAR archive, 7-zip used creation time stamp |
| as modification time stamp. |
| |
| 4.58 alpha 2 2007-12-31 |
| ------------------------- |
| - Small changes in Deflate and LZMA compression. |
| - Some speed optimizations. |
| |
| |
| 4.57 |
| ---- |
| - Bug was fixed: |
| Anti item is created for wrong file: |
| http://sourceforge.net/forum/forum.php?thread_id=1880366&forum_id=45798 |
| |
| |
| 4.52 beta 2007-07-32 |
| ------------------------- |
| - 7-Zip could not decompress some cab files |
| - "." dir creating at FAT was fixed / long names |
| |
| |
| 4.50 beta 2007-07-24 |
| ------------------------- |
| - 7-Zip now replaces unsupported filenames (like "nul", "com1") during extracting. |
| - New switch for command line version: |
| -ssc[-] enables/disables case-sensitive mode. |
| - 7z.exe l shows archive comment for zip archives |
| - Some bugs were fixed: long paths names shorter than 4. |
| - Speed optimizations for AES encryption. |
| |
| |
| |
| 4.56 beta 2007-09-13 |
| ------------------------- |
| - some fixes in LZ encoder (LZMA and Deflate) code. |
| size_t was replaces to ptrdiff_t. |
| size_t version worked incorrectly with some compilers. |
| |
| |
| 4.46 beta 2007-05-25 |
| ------------------------- |
| - CPP Synchronization objects now return HRes (error code) instead of bool. |
| |
| |
| 4.45 beta 2007-04-16 |
| ------------------------- |
| - 7-Zip now uses C version of CRC, so you must call CrcGenerateTable at |
| stratup code, or you must add CPP/Common/CRC.cpp to your project. |
| - Method ID in .7z now is 63-bit integer (UInt64). |
| - Open error messages |
| - unRar 1.5 fixed |
| - unShrink fixed |
| - BUG of 4.43 beta and 4.44 beta was fixed. |
| 7-Zip compressing to .zip in multi-threading mode didn't work in some cases. |
| |
| |
| 4.44 beta 2007-01-20 |
| ------------------------- |
| |
| - Bug was fixed: LZMAEncoder.cpp::CEncoder::GetOptimumFast |
| it was: |
| data++ |
| fixed version: |
| data = _matchFinder.GetPointerToCurrentPos(_matchFinderObj) - 1; |
| It could lead to very small cpmpression ratio decreasing when block needs move. |
| |
| |
| 4.30 beta 2005-11-18 |
| ------------------------- |
| - Security.h::AddLockMemoryPrivilege - installs "Large pages" feature |
| - MemoryLock.h::EnableLockMemoryPrivilege - enables "Large pages" feature |
| - Alloc.h::SetLargePageSize - sets optimal LargePageSize size |
| |
| |
| 4.27 2005-09-21 |
| ------------------------- |
| - Some GUIDs/interfaces were changed. |
| IStream.h: |
| ISequentialInStream::Read now works as old ReadPart |
| ISequentialOutStream::Write now works as old WritePart |
| |
| |
| 4.26 beta 2005-08-05 |
| ------------------------- |
| - MyAlloc(0)/BigAlloc(0) now return 0 |
| |
| |
| 4.25 beta 2005-07-31 |
| ------------------------- |
| - More 64-bit compatibilty |
| |
| |
| 4.24 beta 2005-07-06 |
| ------------------------- |
| - Common\NewHandler.h: using throw() for code size optimization. |
| |
| |
| 4.23 2005-06-29 |
| ------------------------- |
| - Bug was fixed: memory leak in Cab decoder. |
| |
| |
| 4.19 beta 2005-05-21 |
| ------------------------- |
| - BZip2 code was rewritten. Now 7-Zip doesn't use original BZip2 code. |
| Old (original) version was moved to folder 7zip/Compress/BZip2Original/ |
| |
| |
| 4.14 beta 2005-01-11 |
| ------------------------- |
| - STL using was reduced |
| - 7za now supports Split(001) archves |
| |
| |
| 4.10 beta 2004-10-21 |
| ------------------------- |
| - Codecs now use new interface: ICompressSetDecoderProperties2 |
| |
| |
| 4.07 beta 2004-10-03 |
| ------------------------- |
| - some interfaces were changed slightly to support |
| -stdin -stdout mode. |
| - FilterCoder for simple filters |
| - Wildcard censor class was changed. |
| - Bug was fixed: when encrypted stream was multiple 16, |
| it used additional 16 empty bytes. |
| |
| |
| 3.11 2003-10-06 |
| ------------------------- |
| File functions support unicode strings even |
| on Windows 95/98/ME. |
| |
| |
| 3.08.02 2003-09-20 |
| ------------------------- |
| More compatible with GCC. |
| |
| |
| 3.08.02 beta 2003-08-20 |
| ------------------------- |
| Extracting bug in 7zExtract.cpp was fixed. |
| |
| |
| 3.08 beta 2003-08-19 |
| ------------------------- |
| Big source code reconstruction. |
| |
| |
| 2.30 Beta 32 2003-05-15 |
| ------------------------- |
| Small changes in Deflate decoder. |
| |
| |
| 2.30 Beta 31 2003-04-29 |
| ------------------------- |
| Common/NewHandler.cpp |
| HeapAlloc in (included to beta 30) was changed to malloc. |
| HeapAlloc worked slower in Win95/98/Me. |
| |
| |
| 2.30 Beta 30 2003-04-21 |
| ------------------------- |
| new file: Common/String.cpp |
| Common/NewHandler.* were changed |
| |
| |
| 2.30 Beta 29 2003-04-07 |
| ------------------------- |
| Small changes in LZMA code. |
| |
| |
| 2.30 Beta 28 2003-02-16 |
| ------------------------- |
| Processing anti-files was corrected. |
| |
| |
| 2.30 Beta 27 2003-01-24 |
| ------------------------- |
| Project/Archiver/Format/Common/ArchiveInterface.h: |
| new IArchiveOpenVolumeCallback interface. |
| |
| |
| 2.30 Beta 26 2003-01-12 |
| ------------------------- |
| SDK/Interface/PropID.h: |
| kpidComment now is kpidCommented |
| |
| |
| 2.30 Beta 25 2003-01-02 |
| ------------------------- |
| Main archive interfaces were changed. |
| |
| |
| 2.30 Beta 24 2002-11-01 |
| ------------------------- |
| SDK/Windows/Synchronization.h |
| SDK/Windows/Synchronization.cpp |
| - some changes. |
| |
| |
| 2.30 Beta 23 2002-09-07 |
| ------------------------- |
| Project/FileManager folder was added. |
| Notation of some source files was changed. |
| |
| |
| 2.30 Beta 22 2002-08-28 |
| ------------------------- |
| Project/FileManager folder was added. |
| Notation of some source files was changed. |
| |
| |
| |
| 2.30 Beta 21 2002-07-08 |
| ------------------------- |
| Project/Compress/LZ/MatchFinder/BinTree/BinTree.h |
| Project/Compress/LZ/MatchFinder/BinTree/BinTreeMain.h |
| Project/Compress/LZ/MatchFinder/BinTree/HC.h |
| Project/Compress/LZ/MatchFinder/BinTree/HCMain.h |
| - RAM requirements for LZMA (7z) compression were reduced. |
| |
| |
| 2.30 Beta 20 2002-07-01 |
| ------------------------- |
| - SDK/Stream/WindowOut.h |
| now it uses only required memory (dictionary size). |
| - Project/Archiver/Resource |
| contains common resurces |
| |
| |
| 2.30 Beta 19 2002-04-11 |
| ------------------------- |
| - SDK/Archive/Rar/Handler.cpp |
| supporting RAR29 |
| |
| 2.30 Beta 18 2002-03-25 |
| ------------------------- |
| - SDK/Archive/Cab/MSZipDecoder.cpp |
| SDK/Archive/Cab/LZXDecoder.cpp: |
| bug with corrupted archives was fixed |
| - Project/Compress/LZ/MatchFinder/BinTree/BinTree.h |
| - Project/Compress/LZ/MatchFinder/BinTree/BinTreeMain.h |
| some speed optimization (using prefetching) |
| |
| |
| 2.30 Beta 17 2002-03-03 |
| ------------------------- |
| - ARJ suppport. |
| |
| |
| 2.30 Beta 16 2002-02-24 |
| ------------------------- |
| - Project/Compress/LZ/LZMA/Decoder.cpp: |
| Bug was fixed: LZMA could not extract more than 4 GB. |
| - RPM and CPIO formats. |
| - Project/Compress/LZ/LZMA/Encoder.* |
| Project/Archiver/Format/7z/OutHandler.cpp |
| New fast compression mode for LZMA: -m0a=0. |
| - New match finders for LZMA: bt4b, hc3, hc4. |
| |
| |
| 2.30 Beta 15 2002-02-17 |
| ------------------------- |
| - Compression ratio in LZMA was slightly improved: |
| Project/Compress/LZ/LZMA/Encoder.* |
| Project/Archiver/Format/7z/OutHandler.cpp |
| |
| |
| 2.30 Beta 14 2002-02-10 |
| ------------------------- |
| - Supporting multithreading for LZMA: |
| Project/Compress/LZ/MatchFinder/MT |
| - Common/String.h: |
| CStringBase::Replace function was fixed. |
| |
| |
| 2.30 Beta 13 2002-01-27 |
| ------------------------- |
| - Compress/LZ/MatchFinder/BinTree3.h: |
| method |
| - Compress/LZ/MatchFinder/BinTreemain.h: |
| - one VirtualAlloc array was splitted to |
| the for 3 arrays. |
| - Hash-functions were changed. |
| |
| |
| |
| 2.30 Beta 12 2002-01-16 |
| ------------------------- |
| - Compress/LZ/MatchFinder/BinTreemain.h: |
| Compress/LZ/MatchFinder/Patricia.h: |
| Compress/PPM/PPMd/SubAlloc.h: |
| Beta 11 bugs were fixed: |
| - VirtualFree was used incorrectly |
| - checking WIN32 instead _WINDOWS. |
| Compress/LZ/MatchFinder/Patricia.h: |
| Beta 11 bug with deleting m_Hash2Descendants was fixed. |
| |
| |
| 2.30 Beta 11 2002-01-15 |
| ------------------------- |
| - Compress/LZ/MatchFinder/BinTreemain.h: |
| Compress/LZ/MatchFinder/Patricia.h: |
| Compress/PPM/PPMd/SubAlloc.h: |
| using VirtualAlloc for memory allocating |
| - Exlorer/ContextMenu.cpp: |
| Testing supporting. |
| CreateProcess instead WinExec |
| - Format/Common/IArchiveHandler.h: |
| Exlorer/ProxyHandler.cpp: |
| FAR/Plugin.cpp: |
| New properties names: Method, HostOS. |
| - Exlorer/OverwriteDialog.cpp: |
| FAR/OverwriteDialog.cpp: |
| Windows/PropVariantConversions.h |
| Using National time format was eliminated. |
| |
| |
| |
| 2.30 Beta 10 2002-01-11 |
| ------------------------- |
| - Exlorer/ContextMenu.cpp: bug with context menu on |
| Windows NT4 in Unicode version was fixed. |
| - Format/7z/UpdateArchiveEngine.cpp: bug was fixed - |
| Updating in Beta 8 and 9 didn't work. |
| - Exlorer/CCompressDialog.cpp: history growing bug was fixed. |
| |
| |
| 2.30 Beta 9 2002-01-08 |
| ------------------------- |
| - SDK/Common/Vector.h: sopporting sorted object vectors . |
| - Lang features. |
| - Two new match finders: pat3h and pat4h. |
| - SDK/Archive/Zip/InEngine.cpp: bug was fixed. |
| - SDK/Windows/FileDir.cpp: function CreateComplexDirectory |
| was changed. |
